exit more abruptly to avoid mysterious core dump on quitting program

src/qtgui/main.cpp

@@ -75,6 +75,11 @@ void forgetTempFile(string &fn)
     fn.erase();
 }    
 
+void deleteAllTempFiles()
+{
+    PTMutexLocker locker(thetempfileslock);
+    o_tempfiles.clear();
+}
 
 Rcl::Db *rcldb;
 
@@ -152,9 +157,8 @@ static void recollCleanup()
     deleteZ(rcldb);
     deleteZ(theconfig);
 
-    PTMutexLocker locker(thetempfileslock);
-    o_tempfiles.clear();
-
+    deleteAllTempFiles();
+    
 #ifdef RCL_USE_ASPELL
     deleteZ(aspell);
 #endif

src/qtgui/rclmain_w.cpp

@@ -18,6 +18,7 @@
 
 #include <utility>
 #include MEMORY_INCLUDE
+#include <stdlib.h>
 
 #include <qapplication.h>
 #include <qmessagebox.h>
@@ -687,8 +688,13 @@ void RclMain::fileExit()
 
     rwSettings(true);
 
-    // Let the exit handler clean up the rest (internal recoll stuff).
-    exit(0);
+    // We should do the right thing and let exit() call all the
+    // cleanup handlers. But we have few persistent resources and qt
+    // exit is a great source of crashes and pita. So do our own
+    // cleanup:
+    deleteAllTempFiles();
+    // and scram out
+    _Exit(0);
 }
 
 // Start a db query and set the reslist docsource

src/qtgui/recoll.h

@@ -39,6 +39,7 @@ extern RclConfig *theconfig;
 
 extern void rememberTempFile(TempFile);
 extern void forgetTempFile(string &fn);
+extern void deleteAllTempFiles();
 
 extern Rcl::Db *rcldb;
 extern int recollNeedsExit;